Module 3 Quiz 4 SOE MEDIC
Questions and Answers 2026
According to the Einthoven triangle, lead II is assessed by placing the: - <CORRECT ANSWER
>>negative lead on the right arm and the positive lead on the left leg.
Acetylcholinesterase is a naturally occurring chemical that: - <CORRECT ANSWER >>breaks
down acetylcholine in the body.
A classic sign of atrial flutter is: - <CORRECT ANSWER >>the presence of sawtooth F waves.
A decreased cardiac output secondary to a heart rate greater than 150 beats/min is caused by: -
<CORRECT ANSWER >>decreases in stroke volume and ventricular filling.
A major complication associated with atrial fibrillation is: - <CORRECT ANSWER >>clot formation
in the fibrillating atria.
An electrical wave moving in the direction of a positive electrode will: - <CORRECT ANSWER
>>cause a positive deflection on the ECG.
A positive QRS deflection in lead I means the vector is heading toward the: - <CORRECT
ANSWER >>left arm.
Approximately 70% to 80% of ventricular filling occurs: - <CORRECT ANSWER >>passively.
A regular cardiac rhythm with a rate of 104 beats/min, upright P waves, a PR interval of 0.14
seconds, and QRS complexes that measure 0.10 seconds should be interpreted as: - <CORRECT
ANSWER >>sinus tachycardia.
, A regular rhythm with inverted P waves before each QRS complex, a ventricular rate of 70
beats/min, narrow QRS complexes, and a PR interval of 0.16 seconds should be interpreted as
a(n): - <CORRECT ANSWER >>accelerated junctional rhythm.
Atrial fibrillation can be interpreted by noting: - <CORRECT ANSWER >>an irregularly irregular
rhythm and absent P waves.
A wandering atrial pacemaker: - <CORRECT ANSWER >>may have variable PR intervals.
Bombardment of the AV node by more than one impulse, potentially blocking the pathway for
one impulse and allowing the other impulse to stimulate cardiac cells that have already
depolarized, is called: - <CORRECT ANSWER >>reentry.
During the refractory period: - <CORRECT ANSWER >>the cell is depolarized or in the process of
repolarizing.
If a patient's ECG rhythm shows any artifact, you should: - <CORRECT ANSWER >>ensure the
electrodes are applied firmly to the skin.
In order to call a cardiac rhythm "paroxysmal" supraventricular tachycardia, you would have to:
- <CORRECT ANSWER >>witness its onset and/or spontaneous termination.
In sinus bradycardia, the: - <CORRECT ANSWER >>pacemaker site is the SA node.
Junctional escape rhythms are characterized by: - <CORRECT ANSWER >>a ventricular rate of 40
to 60 beats/min.
Normal sinus rhythm is characterized by which of the following? - <CORRECT ANSWER
>>Consistent PR intervals and upright P waves
Questions and Answers 2026
According to the Einthoven triangle, lead II is assessed by placing the: - <CORRECT ANSWER
>>negative lead on the right arm and the positive lead on the left leg.
Acetylcholinesterase is a naturally occurring chemical that: - <CORRECT ANSWER >>breaks
down acetylcholine in the body.
A classic sign of atrial flutter is: - <CORRECT ANSWER >>the presence of sawtooth F waves.
A decreased cardiac output secondary to a heart rate greater than 150 beats/min is caused by: -
<CORRECT ANSWER >>decreases in stroke volume and ventricular filling.
A major complication associated with atrial fibrillation is: - <CORRECT ANSWER >>clot formation
in the fibrillating atria.
An electrical wave moving in the direction of a positive electrode will: - <CORRECT ANSWER
>>cause a positive deflection on the ECG.
A positive QRS deflection in lead I means the vector is heading toward the: - <CORRECT
ANSWER >>left arm.
Approximately 70% to 80% of ventricular filling occurs: - <CORRECT ANSWER >>passively.
A regular cardiac rhythm with a rate of 104 beats/min, upright P waves, a PR interval of 0.14
seconds, and QRS complexes that measure 0.10 seconds should be interpreted as: - <CORRECT
ANSWER >>sinus tachycardia.
, A regular rhythm with inverted P waves before each QRS complex, a ventricular rate of 70
beats/min, narrow QRS complexes, and a PR interval of 0.16 seconds should be interpreted as
a(n): - <CORRECT ANSWER >>accelerated junctional rhythm.
Atrial fibrillation can be interpreted by noting: - <CORRECT ANSWER >>an irregularly irregular
rhythm and absent P waves.
A wandering atrial pacemaker: - <CORRECT ANSWER >>may have variable PR intervals.
Bombardment of the AV node by more than one impulse, potentially blocking the pathway for
one impulse and allowing the other impulse to stimulate cardiac cells that have already
depolarized, is called: - <CORRECT ANSWER >>reentry.
During the refractory period: - <CORRECT ANSWER >>the cell is depolarized or in the process of
repolarizing.
If a patient's ECG rhythm shows any artifact, you should: - <CORRECT ANSWER >>ensure the
electrodes are applied firmly to the skin.
In order to call a cardiac rhythm "paroxysmal" supraventricular tachycardia, you would have to:
- <CORRECT ANSWER >>witness its onset and/or spontaneous termination.
In sinus bradycardia, the: - <CORRECT ANSWER >>pacemaker site is the SA node.
Junctional escape rhythms are characterized by: - <CORRECT ANSWER >>a ventricular rate of 40
to 60 beats/min.
Normal sinus rhythm is characterized by which of the following? - <CORRECT ANSWER
>>Consistent PR intervals and upright P waves
